From the voyage drawer it is possible to change the status of the voyage by using the status chip next to the reference no at the top of the drawer.
When changing status from estimate to Allocate, the following modal will show, where you have to select the vessel, and if you want, you can manually change the position. It will by default be put last.
When changing status from Estimate to Nominated, the following modal will show. If it is a TC voyage with missing laycan on the TC, you will have to fill in the layCan as well.
The nominating process will also change the booking status of all of the cargoes on the voyage to 'Clean Fix'.